Question
Physics Question on Semiconductor electronics: materials, devices and simple circuits
Which of the statement is true for p-type semiconductors.
A
Electrons are majority carriers and trivalent atoms are the dopants.
B
Electrons are minority carriers and pentavalent atoms are the dopants.
C
Holes are minority carriers and pentavalent atoms are the dopants.
D
Holes are majority carriers and trivalent atoms are the dopants.
Answer
Holes are majority carriers and trivalent atoms are the dopants.
Explanation
Solution
In a p-type semiconductor, the holes are the majority carriers, while the electrons are the minority carriers. A p-type semiconductor is obtained when trivalent atoms, such as aluminum, are doped in silicon atoms.
Therefore, the correct statement is (D).